Other
Lasers, other than laser diodes; other optical appliances and instruments, not specified or included elsewhere in this chapter: > Other devices, appliances and instruments: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Products classified under HTS 9013.80.91.00
He-Ne Laser Tube
A helium-neon gas laser tube used in scientific instruments for alignment and interferometry. It generates a continuous visible red laser beam and falls under HTS 9013.80.91.00 as a laser other than laser diodes, not specified elsewhere. This classification covers standalone optical appliances for precision applications.
Holographic Interferometer
An optical instrument using lasers to measure surface deformations and vibrations via holography. Classified in HTS 9013.80.91.00 as other optical appliances not elsewhere specified, distinct from basic telescopes or measuring tools. Ideal for non-destructive testing in engineering.
Optical Spectrum Analyzer
A device that analyzes the optical spectrum of light sources using diffraction gratings and detectors. It qualifies under HTS 9013.80.91.00 for other optical instruments not specified elsewhere, used in photonics R&D. Excludes electrical spectrum analyzers.
Laser Beam Profiler
An instrument using CCD cameras and optics to measure laser beam intensity profiles and quality (M² factor). Falls under HTS 9013.80.91.00 as other optical appliances for laser characterization. Not a general measuring telescope.
Schlieren Imaging System
Optical setup with parabolic mirrors and knives to visualize air flow and shock waves via density gradients. Classified HTS 9013.80.91.00 for other optical instruments in aerodynamic research. Excludes machine vision systems.
Fabry-Perot Interferometer
Precision optical cavity with parallel mirrors for measuring laser wavelengths and fine spectra. HTS 9013.80.91.00 covers this as other unspecified optical instruments for spectroscopy. Not a scanning confocal microscope.
Laser Alignment Tool
Portable optical device combining laser source, beam expander, and target for machinery alignment. Under HTS 9013.80.91.00 as other optical appliances, not technical machine parts. Used in industrial maintenance.
Autocollimator
Optical instrument projecting reticle onto mirror and measuring angular deviation via return beam. HTS 9013.80.91.00 for other optical alignment devices in metrology. Distinct from surveyor's levels.
Beam Splitter Cube
Polarization-insensitive optical cube splitting laser beams 50/50 using dielectric coatings. Classified HTS 9013.80.91.00 as other mounted optical elements functioning as appliances. Not unmounted prisms.
Michelson Interferometer
Classic optical instrument with beam splitter and movable mirror for displacement measurement via fringes. HTS 9013.80.91.00 covers educational and research versions as other optical appliances. Excludes FTIR spectrometers.
Laser Doppler Vibrometer
Non-contact optical sensor measuring vibration via Doppler shift of scattered laser light. Under HTS 9013.80.91.00 as other optical instruments for dynamic measurement. Not electrical transducers.
Optical Tweezer System
Laser-based optical trap manipulating microscopic particles using focused beams. HTS 9013.80.91.00 for other optical instruments in biological research. Excludes laser diodes alone.
White Light Interferometer
Broadband light source interferometer for 3D surface profilometry using coherence scanning. Classified HTS 9013.80.91.00 as other optical surface measurement appliances. Not monochromatic laser types.
Spatial Light Modulator
Liquid crystal array modulating laser wavefront phase/amplitude for beam shaping. HTS 9013.80.91.00 covers as other optical appliances for adaptive optics. Not display LCDs.
Laser Speckle Contrast Imager
Optical system imaging blood flow via laser speckle pattern contrast analysis. Under HTS 9013.80.91.00 as other optical medical research instruments. Excludes therapeutic lasers.